Zobrazeno 1 - 10
of 16
pro vyhledávání: '"S. D. Vrtilek"'
Autor:
John M. Dickey, S. D. Vrtilek, Michael McCollough, Bram Boroson, John A. Tomsick, Charles Bailyn, Jay M. Blanchard, Charlotte Johnson
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 268, Iss 1, p 35 (2023)
The rapid variability of X-ray binaries (XRBs) produces a wide range of X-ray states that are linked to activity across the electromagnetic spectrum. It is particularly challenging to study a sample of sources large enough to include all types in the
Externí odkaz:
https://doaj.org/article/85c0f66a144a470194505e49d61b87c7
X-ray Binaries (XRBs) consist of a compact object that accretes material from an orbiting secondary star. The most secure method we have for determining if the compact object is a black hole is to determine its mass: this is limited to bright objects
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c3d2febc4a9ba2c215a25a4ddabfab6
http://arxiv.org/abs/2204.00346
http://arxiv.org/abs/2204.00346
Symbiotic stars show emission across the electromagnetic spectrum from a wide array of physical processes. At cm-waves both synchrotron and thermal emission is seen, often highly variable and associated with outbursts in the optical and X-rays. Most
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97bdf69aeec8e080382700abbc6403a7
http://arxiv.org/abs/2102.07340
http://arxiv.org/abs/2102.07340
Autor:
Ewan O'Sullivan, A. Mossman, Jennifer Lauer, Raffaele D'Abrusco, Ginevra Trinchieri, Giuseppina Fabbiano, Douglas Morgan, Douglas Burke, Nazma Islam, Bram Boroson, C. Anderson, S. D. Vrtilek, Michael L. McCollough, Alessandro Paggi, Dong-Woo Kim, Antonella Fruscione
X-ray binaries exhibit a wide range of properties but there are few accepted methods to determine the nature of the compact object. Color-Color-Intensity diagrams have been suggested as a means of distinguishing between systems containing black holes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf1cde07ff231881e8c1b6f528c3c277
Publikováno v:
The Astrophysical Journal. 563:L139-L142
We present first results from simultaneous ultraviolet (Hubble Space Telescope/STIS) and X-ray (Chandra/ACIS) observations of the SMC X-1/SK 160 eclipsing binary system. Observations covering four orbital phases during each of the X-ray high and X-ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::530bf381bbcd0b64e47a6eb3dbcc8143
https://doi.org/10.1086/338733
https://doi.org/10.1086/338733
Publikováno v:
The Astrophysical Journal. 502:441-454
Scorpius X-1 is the brightest extrasolar point source of X-rays and may serve as a prototype for low-mass X-ray binaries as a class. It has been suggested that the UV and optical emission arise as a result of reprocessing of X-rays and that a likely
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34f660cb03ae89dd8087d1021de4c736
https://doi.org/10.1086/305873
https://doi.org/10.1086/305873
Publikováno v:
The Astrophysical Journal. 490:377-382
We present first results from simultaneous ultraviolet (UV; HST/GHRS) and X-ray (ASCA) observations of the 13.5s pulsar LMC X-4 taken in 1996 May. The GHRS data are the highest resolution (both temporal and spectral) UV spectra ever taken of LMC X-4.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::757bbf718553089bc6361c1544cd2819
https://doi.org/10.1086/512792
https://doi.org/10.1086/512792
We show that the orbital variation in the UV P Cygni lines of the X-ray binary LMC X-4 results when X-rays photoionize nearly the entire region outside of the X-ray shadow of the normal star. We fit models to HST GHRS observations of N V and C IV P C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::819978e4e02f4384cd04efe628a19d40
http://arxiv.org/abs/astro-ph/9811267
http://arxiv.org/abs/astro-ph/9811267
Autor:
F. H. Cheng, S. D. Vrtilek
Publikováno v:
Cataclysmic Variables and Related Objects ISBN: 9789401066327
The Her X-l/HZ Her system consists of a neutron star with a rotation period of 1.24 s orbiting a ‘normal’ stellar companion every 1.7 d. Variation in optical and ultraviolet magnitude is attributed to X-ray heating on the side facing the active n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e1f10d1da0b499a7c6cdd99487c4bff
https://doi.org/10.1007/978-94-009-0325-8_115
https://doi.org/10.1007/978-94-009-0325-8_115
Autor:
W. Penninx, Frank Verbunt, John C. Raymond, Walter H. G. Lewin, S. D. Vrtilek, Kazuhisa Mitsuda, Paul Hertz, K. S. Wood
Publikováno v:
The Astrophysical Journal. 637:1148-1148
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38ae01955c69a7469a5ac666a6b095e4
https://doi.org/10.1086/498411
https://doi.org/10.1086/498411